71424656 has 20 divisors (see below), whose sum is σ = 140655804. Its totient is φ = 35126400.

The previous prime is 71424653. The next prime is 71424659. The reversal of 71424656 is 65642417.

It is an interprime number because it is at equal distance from previous prime (71424653) and next prime (71424659).

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 62663056 = 2960^2 + 7916^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71424653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35615 + ... + 37566.

Almost surely, 2^71424656 is an apocalyptic number.

It is an amenable number.

71424656 is a deficient number, since it is larger than the sum of its proper divisors (69231148).

71424656 is a wasteful number, since it uses less digits than its factorization.

71424656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73250 (or 73244 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 71424656 is about 8451.3109042325. The cubic root of 71424656 is about 414.9056852494.

The spelling of 71424656 in words is "seventy-one million, four hundred twenty-four thousand, six hundred fifty-six".